USB charging, part 1: requirements
USB charging, part 1: requirements
Posted Jul 26, 2016 10:48 UTC (Tue) by gioele (subscriber, #61675)In reply to: USB charging, part 1: requirements by eds
Parent article: USB charging, part 1: requirements
> Yes, I'm specifically asking what happens when such a device is in use. SyncStop blocks the data pins, which is exactly what I described.
>
> If no data pins means no enumeration, and no enumeration means the host will cut the current back, then it's not a very useful way to recharge.
>
> If no data pins means no enumeration, and no enumeration means the host will cut the current back, then it's not a very useful way to recharge.
What SyncStop/USB condom should do is to have a chip connected to the data pins that does the enumeration-dance with the host and, once it is done, it should forward the current to the gadget/phone/camera attached to it. In this way the enumeration is done, but not by the phone/camera itself.